[gtk] widget-factory: Use proper setter to set has-arrow

[Timm Bäder <baedert src gnome org>]

commit c3f82534bdd175061c2fe69e8d0ac31e015b19f9
Author: Timm Bäder <mail baedert org>
Date:   Fri Aug 30 06:18:45 2019 +0200

    widget-factory: Use proper setter to set has-arrow

 demos/widget-factory/widget-factory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/demos/widget-factory/widget-factory.c b/demos/widget-factory/widget-factory.c
index 781f63f7cd..5be2f97dac 100644
--- a/demos/widget-factory/widget-factory.c
+++ b/demos/widget-factory/widget-factory.c
@@ -1649,7 +1649,7 @@ set_up_context_popover (GtkWidget *widget,
   GtkWidget *popover = gtk_popover_menu_new_from_model (widget, model);
   GtkGesture *gesture;
 
-  g_object_set (popover, "has-arrow", FALSE, NULL);
+  gtk_popover_set_has_arrow (GTK_POPOVER (popover), FALSE);
   gesture = gtk_gesture_click_new ();
   gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), GDK_BUTTON_SECONDARY);
   g_signal_connect (gesture, "pressed", G_CALLBACK (clicked_cb), popover);